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SERIES II INTELLIGENT DATA/FAX MODEMS
6. Set DIP-Switch # 3 UP on both local and remote modems. This
changes the transmit level to -15dB and this change is necessary
to operate in back-to-back mode
7. Turn on both units and wait for carrier detect (CD).
8. Short out pins 2 and 3 on the RS-232C interface on the remote
modem (with a paper clip or some other metal device, for
example).
Figure 8-4A. Back-to-Back Test Cabling
ON
OFF
INTERFACELEASE
POWER
PSTNPHONE
VOLUME
ON
OFF
INTERFACELEASE
POWER
PSTNPHONE
VOLUME
ON
OFF
INTERFACELINE
POWER
PHONE
VOLUME
ON
OFF
INTERFACELINE
POWER
PHONE
VOLUME
Remote sites:
Short Pins 2 and 3
of the RS-232
interface